#VU29189 Stored cross-site scripting in Page Builder: KingComposer - Free Drag and Drop page builder by King-Theme

Vulnerability identifier: #VU29189

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]

CVE-ID: N/A

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Page Builder: KingComposer - Free Drag and Drop page builder by King-Theme
Web applications / Modules and components for CMS

Vendor: King-Theme

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in several shortcode filters in "/kingcomposer/kingcomposer.php". A remote authenticated attacker can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Page Builder: KingComposer - Free Drag and Drop page builder by King-Theme: 2.0.0 - 2.9.2

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External links
https://wpvulndb.com/vulnerabilities/10270/
https://blog.nintechnet.com/wordpress-kingcomposer-page-builder-fixed-multiple-critical-vulnerabilities/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.